( Reaffirmed 2006 ) -tS : 11596- 1986 Indian Standard SPECIFICATION FOR GRADING OF UNCUT INDIAN Jute and Jute Products Chairman SHRI BIMLI TDC 3 Sectional Committee, Representing B. R. BASU Members Jute Commissioner, Calcutta SHRI U. S. BAID SHRI S. CHATTERIEE ( klkwzare SHRI SHR~ Pesticides A. T. BASAK S. K. BWTTACHARYA ) Association Wing, of India, New Delhi Directorate New Delhi Inspection Supplies & Disposals, General of SHRI RATICHAND BOTHRA Calcutta Baled Jute Association, Calcutta CH.~II~MAN Indian Jute Mills' Association Caktltta SHRI G. M. BHANUARI ( Rlrerrwre I ) SHRI S. N. MUNDRA ( Alrer/mrr II ) SHRI K. K. CHATTERJ~E National Jute Manufactures' Corporation SHRI A. N. SANYAL ( AIter~atc ) Jute Corporation of India Ltd, Calcutta SHR~ A. C. Blswas ( Afternate Calcutta Lt& ) Jute DK C. R. DEBNATH ~SHRI 0. P. bHAMIJA SWRI G MI-rRA ( Alfernate ) Export Technoloeical ( ICAR ). Calcutta Research Laboratories Inspection Council of India, Calcutta SHRI D. K. Du-11 SHRI SEKHAR GUHA SHRI KAJAL S~`N ( Afftirnure ) SHR1 D. GUPTA OEice of the Jute Eskaps Commissioner, Calcutta ( India ) Private Ltd, Calcutta Development Association, Jute SHRI P. J. JAGUS L-r-COL P. N. MALHOTRA SHRI A. N. MUSHRAN ( Aiternafe SHRI A. C. MATHUR SHRI M. E. PAL ( Alternate ) SHRI S. N. MUNDRA SHRI SHRI G. SIVARAMAN ( Alternate Manufactures Calcutta Manufacturers' Council, . ) Cement Ministry Ministry of Defence of Defence ( DGI ) Bombay ) ( R & D ) Shippers' Association, L. SWAMINATHAN ( Alternate ) Calcutta Jute Calcutta Fabrics ( Contirwed on page 2 ) @ Copyright STANDARDS 1981 INSTITUTION INDIAN This publication is protected under the fndian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act. IS : 11596 - 1986 ( Continued from page 1) Representing Members Fertilizer Association of India, New Delhi Rashtriya Chemicals & Fertilizers Ltd, Bombay Indian Jute Industries' Research Association, Calcutta DR U. MUKHOPADHYAY ( Alternates) New Central Jute Mills Co Ltd. Calcutta SHRI T. K. ROY CHOWDHURY Indian Institute of Packaging, Bombay SHRI AMITAVA SANYAL SHRI K. B. GUPTA ( Alternate ) SHRI J. N. SARID Food Corporation of India, New Delhi SHRI JASBIR SINGH ( Alternate ) SHRI A. N. SINGH Ministry of Agricu'ture Director General, ISI ( Ex-officio Member ) SHRI R. I. MIDHA, Director ( Tex ) SHRI D. R. DR V. PACHAIYAPAN SHRI S. K. PATANKAR DR S. R. RANG~NATHAN Joint Secretary KOHLI Director ( Tex ), ISI Raw Jute and Allied Fibres Subcommittee, TDC 3 : 1 Convener SHRI S. K. BHATTACHARYA Members SHRI A. N. SANYAI. ( Alternate Bnatta`charya ) Shr' I 3. - k. *- -' SHRI ABD~~L RASHID AGR~CULTU URAL MARKETING ADVISER SHRI AZAD ALI Jute Corporation of India Ltd, Calcutta to Jute Growers, `Agricultural West Bengal Marketing Adviser ment of India, Faridabad to the Govern- SHRI A. S. YAWALKAR ( Alternate ) Jute Growers, Assam New Central Jute Mills Co Ltd, Calcutta SHRI J. L. BAGRA SHRI M. G. MOHTA ( Alternate) Indian Jute Mills Association, Calcutta SHRI G. M. BHANDARI Jute Brokers' Association, Calcutta SHRI A. C. BHURA Jute Growers, West Bengal SHRI NIL KAMAL BISWAS East India Jute & Hessian Exchange Ltd, SHRI R. C. BOTHRA Calcutta A. M. Mair & Co, Calcutta SHRI SHANTICHAND BOTHRA Jute Agricultural Research Institute, BarrackDR N. K. CHAKRABARTI pore DR P. C. MITRA ( Alternate ) Ministry of Agriculture & Co-operation DR K. CHAKRAVARTY SHRI N. C. HALDER ( Alternate ) Indian Jute Mills Association, Calcutta SHRI H. C. CHANDAK SHRI NRIPENDRA NATH CHOUDHURY Jute Growers, West Bengal Office of the Ju;e Commissioner, Calcutn SHRI D. R. DAS ( Continued on page 9 ) 2 IS:11596-1986 Indian Standard SPECIFICATION FOR GRADING OF UNCUT INDIAN BTMTJ 0. FOREWORD 0.1This Indian Standard was adopted by the Indian Standards Institution on 30 January 1986, after the draft finalized by the Jute and Jute Products Sectional Committee had been approved by the Textile Division Council. 0.2 Grading of white, tossa and daisee uncut Indian jute has been covered in IS : 271-1975" which now forms the established basis of grading of raw jute. This standard 0.3 -Grading of uncut Indian mesta has been covered in IS : 9846-1981t. covers grading of Bimli fibre grown specially in Andhra Pradesh. In this standard, four grades have been prescribed for Bimli. A scoring scheme has been included to grade the fibres on the basis of strength, defects, root content, colour, fineness and heaviness or lightness. 0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be' rounded off in accordance with IS : 2-19601. The number of significant places retai'ined in the rounded off value should be the same as that of the specified value in this ;: g standard. 1. SCOPE * covers grading of Bimli fibres -frc& which roots have 1.1This standard not been cut. 2. TERMINOLOGY 2.0 For the purpose of this standard, the following definitions shall apply. 2.1 Bimli - Bimli fibres are exclusively grown in Andhra Pradesh and are generally associated with underground roots since the plants are *Grading of white, tossa and daisee uncut Indian jute ( second revision ). TGrading of uncut Indian mesta. $Rules for rounding off numerical values ( revised ). 3 IS : 11596 - 1986 during harvesting. `It is obtained from the bark of Hibiscus a substitute for jute. It is generally inferior and coarser than jt te. Chemically, the fibre is different from jute in its low lignin c( ntent. uprooted sabdarifa, 2.2 Parcel or drums. 2.3 Strength induced Cor signment containing The ability a certain number of bales, bundles to -resist strain or rupture of the fibres by extet nal forces. 2.3.1 The strength aspect of the fibres is classified depending upon their tenacity. The terms used for the purpoes of grading are `Good', `Fair', `Average' and `Weak mixed'. by the NOTE 1 - Tenacity is the breaking load of a material under test divided linear density of the unstrained material, expressed as grams per tex. NOTE 2 - Linear density is the mass per unit length; Ihe quotient obtained by dividing the mass of the fibre or yarn by its length. When the mass is expressed in grams and the length in kilometres, the resulting value, that is, the quotient, is expressed as tex. 2.4 Colour - The property of fibre which distinguishes as creamy, white, grey, etc. 2.4.1 The colour descriptian of fibres in relation for the purpose of grading is given below: Good Average its appearance to the terms used Creamy to whitish Greyish to dark 2.5 Finenew - A measure of diameter ( width ) or mass per unit length, or both, of the fibre filament. The finer the fibre, the better is its spinning quaMy. .I 2i5.1 The fineness aspect of the fibre is classified depending upon its tex $alul: (see Note 2 under 2.3.1 ). 2.6 Reed The fibre system from the individual Bimli plant. 2.7 Reed Length - The length of the reed from bottom to tip excluding the underground root portions. 2.8 Effective Reed Length - The length of the reed after the root and hard balky crappy ends have been removed. 2.9 Root - The hard barky region at the lower end of the reed which requires additional softening treatment normally called `cuttings'. This includes the underground root portion. 4 IS : 11596- 1986 2.10 Centre Root ( Buckchhal )- The hard barky region in the middle part of the reed which requires additional softening treatment. 2.11 Dazed Fibre - Fibre which is weak in strength and full in appearance, due to usually being stored in moist condition. 2.12 Over-Retted due to prolonged FibreV- Fibre which has lost its strength and brightness from the lower end to the retting. 2.13 Runners - Hard barky fibre running middle region, more or less continuously. 2.14 Knots - Stiff barky spots in the body of the reed which break the continuity of the fibres when opened. A type 2.15 Mossy Fibre atiazhed to the Bimli plant. of vegetation which sometimes gets 2.15.1 Its portions may remain on the fibre even after retting and washing. It can be separated by hand. 2.16 Sticks, Entangled Sticks and Loose Sticks - Sticks are remnants of woody part of Bimli plant over which fibre sheath is formed. Entangled sticks are broken sticks which are linked with fibre mass and are not easily removable. Loose sticks are broken sticks easily removable by shaking. 2.17 Croppy Fibre - Fibre with top ends rough barky ) caused by careless retting. and hard ( but not weak 2.18 Weak Croppy Fibre - Fibre which has become unusually o.:er a length of about 30 cm at the top end. 2.19 Entangled Croppy En4 Fibre - Fibre with unusually by undissolved entangled pectinous crappy end. 2.20 Gummy Fibre matter. Fibres beld together 2.21 Leaf and Loqse Lerf - Leaf is the dark grey leafy or paper like substance ( remnant of the skin of the plant) appearing on the strand. Loose leaves are those that lie loosely on the fibre and are easily removable. 2.22 Specks - Soft barky spots in the body where fibies can be separated with some effort without breaking their continuity, though they may remain as weak spots. 2.23 Natural Dust - The dust which might fibre during the process of its production. 5 get associated with the 1s:11596 - 1986 Tangled 2.24 Habi Jabi - and ravelled Bimli of any description free of sticks. 2.25 Feswa 2.26 Defects 2.26.1 Major - Entangled crappy end fibre, centre root, dazed and over-retted fibres, runners, knots and entangled sticks. 2.26.2 Minor - Crappy fibre, weak crappy fibre, gummy fibre, loose sticks, specks, leaves and mossy fibre. 3. UNIT OF GUARANTEE 3.1 The unit of guarantee shall be a bale, bundle or drum made of For purposes of appraisement, each such bale, morahs or `heads'. bundle or drum shall be treated"as a separdte unit and shall, in itself, fulfil the guarantee of the grade. II 4. GRADING Pickings of the fibre left over in the sticks of the plant after extl action of the major fibre in the process of stripping after retting. 4.1 The Bimli fibre ( from which roots have not been cut ) shall be classified into 4 grades as given in Table 1. 4.2 The `hand and eye' method may be used for assessing these qualities as is presently in vogue in trade but in case of any dispute, the corresponding test method applicable for jtite, mesta and Bimli as mentioned in the table may also be followed for', correct assessment on scientific ,. basis. NOTE - According to the trade practick for comparing strength, the tufts of fibres of approximately equal size held equal distance apart, are broken longi_ tudinally without jerk. Good lustre indimtes good fibre strength. Root content in terms of percentage by mass is judged by observing the extent of roots along the length. Light or heavy bodiedness of the fibre is assessed by feeling the lightness or heaviness of a bunch of fibre reeds ( by raising and lowering ) when held within a grip. 4.3 Relative weightage to each of the quality characteristics is attributed by a system of scori?g for various g.rad& by `hand and eye' method for routine grading. The marks allocated are on the basis of the objective assessment of the different quality chiracteristics and as such shall be used for the purpose of grading on the basis as given in Table 1. 5. PACkING 5.1 The Bimli fibre should be so packed that morahs in any bale, bundle or drum are of only one grade. 5.2 Each bale, bundle or drum should have a grade tag indicating year of harvest, grade and trademark, 6 the TABLE 1 REQUIREMENTS OF FIBRE CHARACTERISTICS AND SCORING FOR DIFFERENT GRADES OF UNCUT INDIAN BIMLI ( Clauses 4.1 and4.3 GRADE STRENGTH SCHEME ) FINENESS HEAVINESS/ LIGHTNESS TOTAL SCORE , DEFECTS MAXIMUM ROOT COLOUR CONTENT.PERCFNTBY MA& (WEIGHT) (4) (1) B-l (2) Good (3) (7) Good Fine, well segregated fibre reeds (3) Coarse Heavy (81 Free from major defects and crappy fibre and reasonably frre from leaves and specks (301 Substantially free from major defects except some knots and entangled sticks but free from weak crappy ends ( 24 ) Free from centre roots and reasonably free from overretted fibres and runners (15) All other Bimli not conforming to any of the above grades but of commercial value. Tt may contain Habi Jabi but not Fewa ( 10 ) 10 (25) 411 B-2 Fair ( 30 1 (18) (6) Average (6) Average 100 (18) B-3 Average (22 1 ( 25 ) (2) - (`1 - (3) 70 - ( 10) B-4 (15) - - - 40 ( Continued ) TABLE 1 REQUIREMENTS OF FIBRE CHARACTERISTICS AND SCORING SCHEME FOR DIFFERENT GRADES OF UNCUT INDIAN BIMLI - Contd i;; .. ci Y B * Xz en reed length should be 150 cm or the effeqtive reed length should not be legs NOTE 3 - The minimum than 100 cm except for grade B-4. The root content includes hard barky oroppy ends. Far determination of strength, defects, root content, fineness, heaviness or lightness (bulk density) relevant part of IS : ?O32* should be referred. NOTE 2 - The ftbre should be in dry storable condition. NOTE 3 - The Abre should be free from mud and other foreign materials. NOTE 4 - Natural dust may be allowed in Grade B-2, R-3 and B-4 with firaportionate discount, NOTE 5 -. A parcel of Bimli which would not score full marks for a particular grade shall still be considered for that grade with suitable discount to be settled between the buyer and the seller provided its SCOR is not less by 50 ( or more ) percent of the differebce between the maximum scores for that and the next lower grade. When the score is less by 50 ( or more ) percent of the difference, the buyer ~111 have the option to reject or settle with a suitable discount. NOTE6 - Scores in the table may be taken as guidance for determining the discount, *Physical Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 methods of test for white, toJsa and da&e Ge.neral Reed length Root conten,? Defects Foreign matter Bulk density Bundle strength Fineness uncut In,dian jute;: ' IS : 11596- 1986 ( Conlinried from Members page 2 1 Representing Jute DR C. R. DEBNATH Technological Research Laboratories ( ICAR ),-Calcutta Government of Tripura SHRI S. R. DEV Jute Growers, Uttar Pradesh SHRI AVADH BIHARI DIXIT Jute Growers, West Bengal SURI UMA SHANKAR HALDER Bengal Jute Dealers' Association. Calcutta SHRI MADAN LAL KALA Calcutta Baled Jute Association, Calcutta SHRI PURANMULL KANKARIA SHRI RATICHANI) BOTHRA ( Alternate ) Government of Uttar Pradesh SHRI R. B. LAL Jute Growers, Andhra Pradesh SHRI TADI SANYASI NAIDU SHRI PRAMODA KISHOKE PATTANAIK Government of Orls?a Jute Growers, Bihar SHRI BHAIRAV LAI. PRADHAN Jute Growers, Orissa SHRI CHAKRAD~AR PRAD~AN Government of Bihar DR D. N. RAM Government of Andhra Pradesh SHRI K. RAMA RAO Indian Jute Industries' Research Association, DR S. R. RANGANA~IIAN Calcutta SHRI S. PALIT ( Altwnate ) Jute Growers, Andhra Pradesh SHRI BURRA VENKATESWARARAN Jute Growers, Bihar SHRI KULANAND SAFIA Jute Growers, Tripura &RI JITBNDRASARKAR SECRETARY,ASSAM STATE AGRIGovernment of Assam CULTURAL MARKETING BOARD Guvernment of West Bengal SHRI A. K. SENGUPTA Jute Balers' Association, Calcutta SHRI S. L. TAPARIA Jute Growers, Assam SHRI THULESWARNATI% Ad-hoc Panel for Grading Bimli Fibre SHRI B. B. BHOWMICK SHRI J. L. BANTHIYA SHRI G. M BHANDARI &RI K. D. KHANDELWAL SHRI A. K. MICRA SHRI N. K. RAWAT SHRI A. N. SANYAL SHRI S. L. TAPARIA Chitavalsah Jute Mills Co Ltd, Chitavalsah Indian Jute Mills Association, Calcutta Jute Technological Research Laboratories ( ICAR ), Calcutta Indian Jute Mills Association, Calcutta Indian Jute Industries' Research Association, Calcutta Chitavalsah Jute Mills Co Ltd, Chitavalsah Jute Corporation of India Ltd, Calcutta Jute Balers' Association, Calcutta 9 INTERNATIONAL Base Units QUANTITY Length Mass Time SYSTEM UNIT metre kilogram second ampere kelvin candela mole UNIT radian steradiao OF UNITS ( SI UNITS 1 SYMBOL m kg : K cd mol Electric currenr Thermodynamic temperature Luminous intensity Amount of substance Supplementary Units QUANTITY Plane angle Solid angle Derived Units QUANTITY Force Energy Power Flux Flux deosity Frequency Electric conductance Electromotive force Pressure, stre88 SYMBOL rad sr UNIT SYMBOL DEPINITIOR newton joule watt weber tesla hertz siemens volt Pascal N J W Wb T HZ s V PS I N 1 J = 1 w 1 Wb 1 T 1 Hz 1 S = 1 V-1 1 Pa = 1 kg.m/ss 1 N.m 1 J/s 1 V.s 1 Wblms 1 c/s (s -1) 1 A/V W/A 1 N/ms